Plow-colter



(No Model.)

N. R. DOAN.

PLOW GOLTER.

No; 356,306. Patented Jan. 18, 1887.

I WITNESSES: IIVI/E/VTOI? I By @hhow fifismvw.

@ W ATTORNEY UNTTED STATES PATENT FUEEICE.v

NELSON R. DOAN, OF RUTLAND, XVISGONSIN.

PLOW-COLTER.

SPECIFICATION forming part of Letters Patent No. 356,303, dated January 18, 1887.

Application filed May 8, 1856.

To all tuhom'it may concern:

Be it known that I, NnLsoN R. Donn, a citizen of the United States, residing at Rutlan'd, in the county of Dane and State of Wis cousin, have invented certain new and useful Improvements in Plow Colters; and I do hereby declare the following to beafull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

The object of my invention is to provide an improved device for attaching a plow-colter to plow-beams, said colter when so attached being adjustable vertically, longitudinally, and transversely with regard to the plowbeam and easily detachable therefrom.

It is further the purpose of my invention to provide a colt-er that shall prove equally effective and durable both in stubble and in sod, being especially adapted to cut and clear away from the plow-point such materials as are apt to be collected there, especially tobaccoplants, cornstalks, and the like.

Figure l is a side View of my device at taehed to the plow-beam. Fig. 2 is an end view of the same with the plow-beam in crosssection. -Fig. 3 is a detail view in perspective, showing the supporting-plate of the colterblade.

Similar letters where they occur refer to like parts throughout the several views.

B is theplow-beain, P the supporting-plate, and O the colterblade. The supporting plate P is provided with an end face, P, at right angles toitself, both consisting, preferably, of one piece of metal. The plate P is slotted longitudinally by the slot 8. for the purpose of admitting the staple S. The plate 0 is somewhat wider than the slot 8 and of sufficient length to admit the threaded ends of the staple-arms. The colter-blade O is pivoted by an ordinary nut-bolt, a, in the slot a of the face P, and is clamped to any vertical adj ust nient desired between the limits of the arc-slot b by means of the nut-bolt b. By removing this bolt the colter-blade is detached by simply lifting the bolt a from the slot a.

The plate P is fastened to the plow-beam by screwing the bolt-heads on the lower ends of the staple-arms against the plate 1), thereby Serial No. 201,606. (No model.)

clamping it against the lower face of the supporting-plate P, at the same time clamping the supporting-plateagainst the plow-beam.

The supporting-plate P may be disconnected from the plow-beam by loosening the plate 1) and sliding the plate P transversely over it until the bolts on the ends of the staple-arms are cleared through the slotn in the end face, P. Transverse adjustment of the colter-blade with reference to the land side of the furrow is effected in the same manner. adjustment of the colter blade is effected by sliding the staple S forward or backward over the plow-beam, as desired. I have found by experiment that the point of the colter-blade should generally be about four inches to the rear of the plow-point. (See Fig. 1.)

It is often desirable to adjust the colterblade sufficiently into the land side of the furrow to counteract the opposite tendency of an extra draft-animal. By proper adjustment of the colter-blade, as described, reference being had to the nature of the soil and the number of draft animals employed, the effectiveness of their work may be considerably increased.

\Vhat I claim, and desire to secure by Letters Patent from the United States, is

1. The combination of the longitudinallyslotted bracket P, havingabackwardly-curved angular extension provided with a transverse passage through it and anotched offset thereof, and also with a curved slot which is concentric to said offset, a backwardly-curved fiat colt-er-plate clamped to said curved extension, as described, and a staple fastening the bracket to a plow-beam, substantially as described.

2. The combination, with the right-angular bracket P, slotted and provided with a passage, n, and an offset, a, as described, of the curved colter. secured adj ustabl y to said Longitudinal bracket by claniping'bolts and the staplefastening, which secures the bracket to the plowbeam, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

NELSON R. DOAN.

Wlitnesses:

FRANK E. PARKINSON, RUFUs B. SMITH. 

